With the retail channel turning in a strong performance, unit sales of print books rose 7% in the week ended July 13, 2014, compared to the similar week in 2013, at outlets that report to Nielsen BookScan. Sales through the retail & club channel rose 9% over the week ended July 14, 2013, while sales through the mass merchandiser channel inched up 1%. The juvenile fiction category had the strongest performance, with sales up 21%. Veronica Roth’s Four series landed in the top spot in the segment in its first week on sale, moving over 106,000 copies; it was the bestselling title overall in week 28. John Green’s titles didn’t too badly in the week, with four books combining to sell about 148,000 copies. Even without a major debut, sales in the adult nonfiction segment rose 7% compared to the week ended July 14, 2013. The top seller in the category was America, by Dinesh D’Souza, which sold over 22,000 copies—up more than 400% from the previous week—after the title was removed by Costco, spurring sales; the book has been out for six weeks. Unbroken, by Laura Hillenbrand, sold over 20,000 copies in the week, up 83%, after the death of Louis Zamperini, the WWII vet who is the book’s subject.